The aim of this study was to analyse the energy cost of walking in field compared to walking on a treadmill, for the same speed and gradient.
Autor(es):João Brito, António Moreira, Victor Machado Reis, Marta Martins
RESUMEN COMUNICACIÓN/PÓSTERThe aim of this study was to analyse the energy cost of walking in field compared to walking on a treadmill, for the same speed and gradient. The sample included 8 healthy male subjects (age 22,57±2,07yr; weight 69,71±7,76Kg; height 1,75±0,10m) and completed at auto-selected walking speed 3 segments of natural pedestrian mountain paths with gradient and length of, respectively: 0% and 821m; 6% and 618m; 14% and 598m. The VO2, HR and EE were taken with direct oximetria. The laboratory replication of segments’ speed, length and gradient were performed in a treadmill. At 0%, 6% and 14% gradients the field vs treadmill VO2 measures were, respectively, 17,84±2,57 vs 23,43±2,35, 36,80±9,11 vs 33,06±3,83, 39,28±2,78 vs 44,09±2,46 ml.Kg-1.min-1. Field versus treadmill significant differences (p?0,01) were identified for VO2, in segments with 0% and 14% gradient. The differences were, respectively, -5,59 (95%CI from -6,79 to -4,40,) and -4,81 (95%IC from -7,9 to -2,53). Considering the field versus treadmill comparisons for all variables (VO2, FC, EE), none of the measured values at the 3 gradients indicate that the metabolic responses are identical on the two exercise conditions.
Entidades(es): Polytechnic Institute of Santarém, Portugal, - University of Trás-os-Montes and Alto Douro, Portugal
Congreso: I Congreso Internacional de las Ciencias del Deporte
Palabras Clave: ): Energy expenditure; walking; field tracks; treadmill